Problems receiving email from Gmail

[DotNetBlocks]

Has any one seen these errors before. I can not find any information to solve them. The messages are what gmail sends back to users when they email us.

Technical details of temporary failure: 
TEMP_FAILURE: SMTP Error (state 13): 451 Could not load DRD for domain (dentalplans.com) rcpt (xyxy@dentalplans.com)

And after 2 days we get this error.

Technical details of permanent failure:
PERM_FAILURE: SMTP Error (state 16): 554 Denied [CS] (Mode: normal)

Babloome

 

[franklin97355]

Have you asked Google?

The answer is "42"

 

[DotNetBlocks]

Still waiting on a response. It has been about a week.